20803258 has 8 divisors (see below), whose sum is σ = 35662752. Its totient is φ = 8915676.

The previous prime is 20803253. The next prime is 20803259. The reversal of 20803258 is 85230802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20803253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742960 + ... + 742987.

It is an arithmetic number, because the mean of its divisors is an integer number (4457844).

Almost surely, 2^20803258 is an apocalyptic number.

20803258 is a deficient number, since it is larger than the sum of its proper divisors (14859494).

20803258 is a wasteful number, since it uses less digits than its factorization.

20803258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485956.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20803258 is about 4561.0588682892. The cubic root of 20803258 is about 275.0281315574.

It can be divided in two parts, 20 and 803258, that added together give a triangular number (803278 = T₁₂₆₇).

The spelling of 20803258 in words is "twenty million, eight hundred three thousand, two hundred fifty-eight".